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Finding the Fourth Proportional to 665,630.20, 998,591.10 and 266,170.60

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Solution

The fourth proportional to 665,630.20, 998,591.10 and 266,170.60 is: 399,314.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,630.20 : 998,591.10 = 266,170.60 : x
  2. Step 2: Convert to fraction form
    665,630.20/998,591.10 = 266,170.60/x
  3. Step 3: Cross multiply
    665,630.20x = 998,591.10 × 266,170.60
  4. Step 4: Simplify right side
    665,630.20x = 265,795,592,241.66
  5. Step 5: Solve for x
    x = 265,795,592,241.66/665,630.20
  6. Step 6: Final answer
    x = 399,314.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.